Color photographic silver halide negative imaging material and process

Abstract

A process of compositing two or more separate images comprising: (a) imagewise exposing a color negative photographic recording material to a subject in front of a uniformly colored screen background, wherein the photographic recording material comprises a support bearing red light, green light, and blue light sensitive color records, and at least one distributed red light absorbing compound in an amount such as to reduce the sensitivity of the red light sensitive color record by at least 40%, and the light sensitivities of the green light sensitive color record and the blue light sensitive color record are each reduced by less than 20% by the presence of any distributed light absorbing compounds, (b) forming a color negative image of the subject and screen background by developing the exposed photographic material with a color developing agent, (c) separating the subject image of the color negative from the screen background image, and (d) compositing the separated subject image with a second image. Photographic elements for use in such process are also disclosed. The invention eliminates or substantially reduces red record fringe problems without significantly effecting granularity in the blue and green color records.

We claim: 
     
       1. A speed balanced color negative photographic recording material comprising a support bearing: a red light sensitive color record comprising at least one red light sensitive silver halide emulsion and at least one cyan dye forming image coupler,   a green light sensitive color record comprising at least one green light sensitive silver halide emulsion and at least one magenta dye forming image coupler,   a blue light sensitive color record comprising at least one blue light sensitive silver halide emulsion and at least one yellow dye forming image dye forming coupler, and   at least one distributed red light absorbing compound, wherein the quantity of distributed red light absorbing compound is such as to reduce the sensitivity of the red light sensitive color record by at least 40%, and the light sensitivities of the green light sensitive color record and the blue light sensitive color record are each reduced by less than 20% by the presence of any distributed green light absorbing compounds or blue light absorbing compounds.   
     
     
       2. A material as in claim 1, wherein at least one light sensitive layer of at least one color record comprises a sensitized tabular grain silver halide emulsion. 
     
     
       3. A material according to claim 2, wherein the tabular grain emulsion has an average aspect ratio greater than about 8. 
     
     
       4. A material according to claim 3, wherein at least one light sensitive layer of each of the red and the green color records comprises a sensitized tabular grain silver halide emulsion having an average aspect ratio greater than about 8. 
     
     
       5. A material according to claim 4, wherein the ratio of the average equivalent circular diameter of the largest tabular grain silver halide emulsion of the red color record comprising at least 10% of the total red record silver halide to the average circular diameter of the largest tabular grain silver halide emulsion of the green color record comprising at least 10% of the total green record silver halide is greater than or equal to 1.25. 
     
     
       6. A material according to claim 5, wherein the ratio is greater than 1.4. 
     
     
       7. A material according to claim 5, wherein the ratio is greater than 1.5. 
     
     
       8. A material according to claim 5, wherein the majority of the photographic light sensitive layers of the photographic material comprise sensitized tabular grain silver halide emulsions having average aspect ratios greater than about 8. 
     
     
       9. A material according to claim 5, wherein the sensitivities of the red, green and blue light sensitive color records are balanced for tungsten light exposures. 
     
     
       10. A material according to claim 5, wherein the sensitivities of the red, green and blue light sensitive color records are balanced for day light exposures. 
     
     
       11. A material according to claim 1, wherein the sensitivities of the red, green and blue light sensitive color records are balanced for tungsten light exposures or day light exposures. 
     
     
       12. A process of compositing two or more separate images comprising the steps of: (a) imagewise exposing a color negative photographic recording material to a subject in front of a uniformly colored screen background, wherein the photographic recording material comprises a support bearing a red light sensitive color record comprising at least one red light sensitive silver halide emulsion and at least one cyan dye forming image coupler, a green light sensitive color record comprising at least one green light sensitive silver halide emulsion and at least one magenta dye forming image coupler, and a blue light sensitive color record comprising at least one blue light sensitive silver halide emulsion and at least one yellow dye forming image dye forming coupler, and further comprises at least one distributed red light absorbing compound, wherein the quantity of distributed red light absorbing compound is such as to reduce the sensitivity of the red light sensitive color record by at least 40%, and the light sensitivities of the green light sensitive color record and the blue light sensitive color record are each reduced by less than 20% by the presence of any distributed green light absorbing compounds or blue light absorbing compounds,   (b) forming a color negative image of the subject and screen background by developing the exposed photographic material with a color developing agent,   (c) separating the subject image of the color negative from the screen background image, and   (d) compositing the separated subject image with a second image.   
     
     
       13. A process as in claim 12, wherein at least one light sensitive layer of at least one color record of the photographic material comprises a sensitized tabular grain silver halide emulsion. 
     
     
       14. A process according to claim 13, wherein the tabular grain emulsion has an average aspect ratio greater than about 8. 
     
     
       15. A process according to claim 14, wherein at least one light sensitive layer of each of the red and the green color records of the photographic material comprises a sensitized tabular grain silver halide emulsion having an average aspect ratio greater than about 8. 
     
     
       16. A process according to claim 15, wherein the ratio of the average equivalent circular diameter of the largest tabular grain silver halide emulsion of the red color record comprising at least 10% of the total red record silver halide to the average circular diameter of the largest tabular grain silver halide emulsion of the green color record comprising at least 10% of the total green record silver halide is greater than or equal to 1.25. 
     
     
       17. A process according to claim 16, wherein the ratio is greater than 1.4. 
     
     
       18. A process according to claim 16, wherein the ratio is greater than 1.5. 
     
     
       19. A process according to claim 16, wherein the majority of the photographic light sensitive layers of the photographic material comprise sensitized tabular grain silver halide emulsions having average aspect ratios greater than about 8. 
     
     
       20. A process according to claim 16, wherein the sensitivities of the red, green and blue light sensitive color records are balanced for tungsten light exposures. 
     
     
       21. A process according to claim 16, wherein the sensitivities of the red, green and blue light sensitive color records are balanced for day light exposures. 
     
     
       22. A process according to claim 12, wherein the uniformly colored screen background comprises a blue screen, green screen, or black screen background. 
     
     
       23. A process according to claim 22, wherein the uniformly colored screen background comprises a blue screen background. 
     
     
       24. A process according to claim 22, wherein the uniformly colored screen background comprises a green screen background. 
     
     
       25. A process according to claim 22, wherein the color negative image is digitized with a film scanner and the subject image of the color negative is separated from the screen background image with software algorithms.